Conditions and kinetic nature of the occurrence of oscillatory modes during methane oxidation at T > 1000 K
DOI:
https://doi.org/10.18321/cpc24(2)151-159Keywords:
methane oxidation, oscillatory mode, perfectly stirred reactor, flow-through systems, branched chain reactionAbstract
Within the framework of the ideal mixing flow reactor model, a numerical analysis of the conditions for the occurrence of oscillatory regimes in stoichiometric mixtures of methane with oxygen under isothermal conditions at temperatures T > 1000 K was carried out. It has been established that in certain ranges of temperatures and pressures, self-oscillations of the concentrations of components of the reacting gas mixture may occur. From the set of elementary stages of the detailed kinetic mechanism of the process, 8 reactions were identified that have the strongest influence on the occurrence and characteristics of the oscillatory process. The influence of changes in the rate of each of these reactions on the oscillatory process mode is analyzed. The influence of the gas mixture flow rate on the possibility of occurrence and characteristics of oscillations is shown.
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